title: Efficient inscription of Bragg gratings in As2S3 fibers using near bandgap light.
abstract: Efficient inscription of Fiber Bragg gratings (FBGs) in single-mode, thin cladding As(2)S(3) fibers is demonstrated by using near bandgap light at 532 nm. The FBGs with the reflectivity of over 80% can be induced in only 80-90 s, substantially faster than in previous reports. The dynamics of the grating growth are investigated in the photosensitivity process, showing a fast blue shift of the Bragg wavelength and then a somewhat slower red shift. The aging of the grating after fabrication is also reported, indicating a 37% decay of the grating strength.
authors.forename: L E
authors.initials: LE
authors.lastname: Zou
authors.forename: I V
authors.initials: IV
authors.lastname: Kabakova
authors.forename: E C
authors.initials: EC
authors.lastname: Mägi
authors.forename: E
authors.initials: E
authors.lastname: Li
authors.forename: C
authors.initials: C
authors.lastname: Florea
authors.forename: I D
authors.initials: ID
authors.lastname: Aggarwal
authors.forename: B
authors.initials: B
authors.lastname: Shaw
authors.forename: J S
authors.initials: JS
authors.lastname: Sanghera
authors.forename: B J
authors.initials: BJ
authors.lastname: Eggleton